CN201627562U - Switch plugging blowout relief device in wellhead - Google Patents
Switch plugging blowout relief device in wellhead Download PDFInfo
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- CN201627562U CN201627562U CN2010201158522U CN201020115852U CN201627562U CN 201627562 U CN201627562 U CN 201627562U CN 2010201158522 U CN2010201158522 U CN 2010201158522U CN 201020115852 U CN201020115852 U CN 201020115852U CN 201627562 U CN201627562 U CN 201627562U
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- lubricator
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Abstract
A switch plugging blowout relief device in a wellhead is applied to special switch plugging and blowout relief for crosses at oil extraction wellheads in oil field. The switch plugging blowout relief device in the wellhead mainly comprises a liquid cylinder assembly, a blowout prevention tube assembly and a valve inner plugging packer. The liquid cylinder is fixed onto a flange of the blowout prevention tube assembly through a stud bolt; a plugging packer is arranged inside a blowout prevention tube of the blowout prevention tube assembly; and an outer tube end of the plugging packer is fixed inside a center hole of a rotation prevention flange. The switch plugging blowout relief device has the advantages that an outlet on the side of a cross of a casing pipe is mainly sealed by the plugging packer in an anchoring manner, and the outlet is plugged by compressing a sealing rubber barrel to achieve the purpose of blowout relief and plugging. When leakage causes blowout, blowout relief construction can be carried out. In the primary state of valve leakage, plugging with pressure is carried out.
Description
Technical field
The utility model relates to the petroleum recovering technical field, particularly the production wellhead blowout hookup.It is a kind of well mouth of oil well four-way special switch shutoff blowout control device.
Background technology
Development along with the oil field, because the aging and various human factors of the complicated well head facility of subsurface picture, gas blowout accident takes place unavoidable, in recent years, the blowout out of control accident that each oil field takes place, the various losses that cause are that huge, social influence and lesson are very deep, the severe fact make people to well blowout preventing, blowout takes place how to control after the blowout and the understanding of well control is progressively improved.
But for many years, there be not robbing the spray technique system and can using of moulding abroad, and the domestic same industry also has only a small amount of immethodical spray handling implement of simply robbing, these instrument equipments are simple and crude, can not effectively rob the blowout operation, particularly to high-pressure oil-gas well, a spot of light instrument of only depending on over and all kinds of relief materials equipment of temporarily transferring, tend to incur loss through delay and rob the spirt degree, the spray effect is robbed in influence, often is in the face of the burst blowout, lacks effectively at measure and special-purpose emergency tool equipment, and application conditions is limited comparatively speaking, range of application is narrow, can not tackle complicated stratum and diversified blowout situation.
When production tree sleeve valve body takes place in the situations such as thorn leakage that leakage that sand holes and crack etc. cause and sleeve valve and four-way junction of casing clamp connection place occur, can cause environment pollution, cause the generation of gas blowout accident as untimely processing.When this type of situation of pre-treatment, generally adopt measures such as well killing change, emptying replacing.The preparation of construction time is long, in the construction surrounding environment is polluted and can't be effectively controlled.If blowout takes place, construction machinery can't be close, makes blowout can not get quick solution, causes enormous economic loss.Switch shutoff blowout control device can be changed valve without the kill-job open flow fast at the first time-out of seepage in the well head, also can the laggard blowout leakage operation of robbing take place in blowout, and the accident that prevents further enlarges.
The utility model content
The purpose of this utility model is: switch shutoff blowout control device in a kind of well head is provided, utilize the thrust fluid cylinder that leak stopping packer in the valve is pushed seat envelope in the four-way junction of casing, the outlet of shutoff four-way junction of casing reaches the purpose that the control unsafe condition further enlarges, and realizes robbing safely the spray operation.
The technical solution adopted in the utility model is: switch shutoff blowout control device in the well head, mainly form by leak stopping packer assembly three parts in fluid cylinder assembly, lubricator assembly and the valve by switch shutoff blowout control device in the well head.It is characterized in that: the fluid cylinder assembly is fixed on the flange of lubricator assembly by stud, a leak stopping packer is arranged in the lubricator of lubricator assembly, the outer tunnel end of leak stopping packer is fixed in the anti-rotation flange centre bore.The lubricator assembly can be connected with the well head four-way.
The hydraulic cylinder assembly mainly is made up of pipe, fluid cylinder outer tube, hollow piston, stud and anti-rotation flange in end cover, pipe joint, the fluid cylinder, in the fluid cylinder outer tube, have in the fluid cylinder and manage, an end of pipe is fixed with end cover in fluid cylinder outer tube and fluid cylinder, and the other end of pipe is fixed with flange in fluid cylinder outer tube and the fluid cylinder.The end of fluid cylinder outer tube is fixed with pipe joint, and pipe joint can connect the manual pump high pressure line, for hollow piston provides thrust.In the annular space in fluid cylinder outer tube and fluid cylinder between the pipe hollow piston is arranged, hollow piston passes flange, and the other end of hollow piston is connected on the anti-rotation flange.Stud passes the flange hole of the periphery of anti-rotation flange, and anti-rotation flange can slide at the drive lower edge of hollow piston stud.
The lubricator assembly is made up of flange, lubricator and emptying gate.Flange is connected with the fluid cylinder assembly by stud, and an end of lubricator is fixed in the flange center hole, and the other end of lubricator has external screw thread, can be connected with the well head four-way.The endoporus of lubricator is identical with the cartridge external diameter of leak stopping packer.Can stretch into the leak stopping packer in the lubricator and carry out shutoff.Lubricator is welded with pipeline, is connected with the emptying gate on the pipeline.The emptying gate can be with the pressure in the well from the pipeline emptying.
The leak stopping packer mainly is made up of mandrel, outer tube, connector, cartridge, slip spider, inner central tube, slip insert and end cap.A mandrel is arranged in outer tube, and an end of mandrel is in the outside of outer tube, and the end of mandrel is square, instrument rotation mandrel easy to use.The other end at outer tube is fixed with cylindrical connector, and connector has centre bore.In the connector centre bore, be fixed with inner central tube.Be with cartridge and slip spider on the outer arm of inner central tube.The external diameter of cartridge and slip spider is identical with the connector external diameter.On the outer arm of slip spider, slip insert is arranged.The other end of mandrel has end cap in the end of slip spider in inner central tube.Outer wall and slip spider inwall at inner central tube have trapezoidal motion thread, and the inner central tube energy of rotation promotes the slip spider move left and right.Slip spider is moved to the left, and makes the sealing of cartridge compression-expansion, and right slip insert is opened; Slip spider moves right, and makes cartridge unclamp the cancellation sealing state, and right slip insert is shunk.
Switch shutoff blowout control device operating principle in the well head: mandrel 16 has trapezoidal motion thread with inner central tube 21 cars, and slip insert 22 can move axially on inner central tube 21 with slip spider 20.Leak stopping packer 4 by hollow piston 10 push push up boll-weevil hanger in the sleeve gate after, pipe 8 centre bores stretch into the torque arm mandrel 16 that turns clockwise in the fluid cylinder, mandrel 16 drives inner central tube 21, slip spider 20 on the inner central tube 21 moves down, slip spider 20 moves and slip insert 22 is stretched out block fixedly leak stopping packer 4 of four-way junction of casing inwall, continues rotation mandrel 16 compression seal packing elements 19 Sealed casing pipe four-ways.Construct behind the sleeve valve that finishes or more finish changing, be rotated counterclockwise mandrel 16 and can make cartridge 19 deblockings, deblocking is slip insert 22 retractions simultaneously.Leak stopping packer 4 can be return in the lubricator 14, can close emptying valve 15, unloads the interior switch shutoff blowout control device of well head and returns to normal production.
The beneficial effects of the utility model: switch shutoff blowout control device in the utility model well head, mainly carry out the grappling sealing at the four-way junction of casing side outlet by the leak stopping packer, compression seal packing element shutoff outlet reaches the purpose of robbing blowout leakage.After leaking the formation blowout, can rob spraying construction.In the initial phase of valve leak, implement non-stop plugging.Saved last construction team and connect time of kill line, prevented that leakage accident from further enlarging.But kill-job behind the switch shutoff blowout control device shutoff four-way junction of casing in the well head, but also change the valve construction after the shutoff.Form the interior switch shutoff of well head and robbed pressure spray process technology-specific device.
Description of drawings
Fig. 1 is a switch shutoff blowout control device general structure schematic diagram in the utility model well head.
Fig. 2 is hydraulic cylinder assembly 2 structural profile schematic diagrames.
Fig. 3 is lubricator assembly 3 structural profile schematic diagrames.
Fig. 4 is leak stopping packer 4 structural profile schematic diagrames.
Among the figure, 1. manual pump, 2. hydraulic cylinder assembly, 3. lubricator assembly, 4. leak stopping packer, 5. four-way, 6. end cover, 7. pipe joint, 8. pipe in the fluid cylinder, 9. fluid cylinder outer tube, 10. hollow piston, 11. studs, 12. anti-rotation flange, 13. flanges, 14. lubricators, 15. emptying gates, 16. mandrel, 17. outer tubes, 18. connectors, 19. cartridge, 20. slip spider, 21. inner central tubes, 22. slip inserts, 23. end caps.
The specific embodiment
Embodiment 1: with switch shutoff blowout control device in the well head is example, and the utility model is described in further detail.
Consult Fig. 1.Switch shutoff blowout control device in the utility model well head mainly is made up of 4 assemblies of leak stopping packer in fluid cylinder assembly 2, lubricator assembly 3 and the valve, three parts switch shutoff blowout control device in the well head.
Fluid cylinder assembly 2 is fixed on the flange 13 of lubricator assembly 3 by stud 11, a leak stopping packer 4 is arranged in the lubricator 14 of lubricator assembly 3, outer tube 17 ends of leak stopping packer 4 are fixed in anti-rotation flange 12 centre bores.The lubricator 14 of lubricator assembly 3 is threaded with well head four-way 5.
Consult Fig. 2.Hydraulic cylinder assembly 2 mainly by manage 8 in end cover 6, pipe joint 7, the fluid cylinder, fluid cylinder outer tube 9, hollow piston 10, stud 11 and anti-rotation flange 12 form.Have in fluid cylinder outer tube 9 and manage 8 in the fluid cylinder, an end of pipe 8 is fixed with end cover 6 in fluid cylinder outer tube 9 and fluid cylinder, and end cap has centre bore.The other end of pipe 8 is fixed with flange in fluid cylinder outer tube 9 and the fluid cylinder.The end of fluid cylinder outer tube 9 is fixed with a pipe joint 7, and pipe joint 7 connects manual pump 1 high pressure line, and manual pump 1 can provide thrust for hollow piston 10.In the annular space in fluid cylinder outer tube 9 and fluid cylinder between the pipe 8 hollow piston 10 is arranged, hollow piston 10 other ends pass the flange center hole, and the other end of hollow piston 10 is connected on the outer wall of anti-rotation flange 12 central protuberance.Two studs 11 pass the flange hole of the periphery of anti-rotation flange 12, and anti-rotation flange 12 can slide at two studs in the drive lower edge of hollow piston 10 11.
Consult Fig. 3.Lubricator assembly 3 is made up of flange 13, lubricator 14 and emptying gate 15.Flange 13 is connected with fluid cylinder assembly 2 by stud 11, and an end of lubricator 14 is fixed in flange 13 centre bores, and the other end of lubricator 14 has external screw thread, can be connected with the well head four-way.The endoporus of lubricator 14 is identical with cartridge 19 external diameters of leak stopping packer 4.Lubricator 14 is welded with a pipeline, UNICOM in pipeline and the lubricator 14.Be connected with an emptying gate 15 on the pipeline.Emptying gate 15 adopts flap type.
Consult Fig. 4.Leak stopping packer 4 mainly is made up of mandrel 16, outer tube 17, connector 18, cartridge 19, slip spider 20, inner central tube 21, slip insert 22 and end cap 23.Be with a mandrel 16 in outer tube 17, an end of mandrel 16 is in the outside of outer tube 17, and the end of mandrel 16 is square, instrument rotation mandrel 16 easy to use.The other end at outer tube 17 is fixed with cylindrical connector 18, and connector 18 has centre bore.In connector 18 centre bores, be fixed with inner central tube 21.Be with a ring packing packing element 19 and a slip spider 20 on the outer arm of inner central tube 21.The external diameter of cartridge 19 and slip spider 20 is identical with connector 18 external diameters.Three slip inserts 22 are arranged on the outer arm of slip spider 20.The other end of mandrel 16 has an end cap 23 in the end of slip spider 20 in inner central tube 21.End cap 23 has centre bore.Outer wall and slip spider 20 inwalls at inner central tube 21 have trapezoidal motion thread, and inner central tube 21 energy of rotations promote slip spider 20 move left and right.Slip spider 20 is moved to the left, and makes the sealing of cartridge 19 compression-expansion, and right slip insert 22 is opened; Slip spider 20 moves right, and makes cartridge 19 unclamp the cancellation sealing state, and right slip insert 22 is shunk.
Claims (1)
1. the interior switch shutoff blowout control device of well head mainly is made up of leak stopping packer (4) assembly three parts in fluid cylinder assembly (2), lubricator assembly (3) and the valve switch shutoff blowout control device in the well head; It is characterized in that: fluid cylinder assembly (2) is fixed on the flange (13) of lubricator assembly (3) by stud (11), in the lubricator (14) of lubricator assembly (3) a leak stopping packer (4) is arranged, outer tube (17) end of leak stopping packer (4) is fixed in anti-rotation flange (12) centre bore;
Hydraulic cylinder assembly (2) is mainly by end cover (6), pipe joint (7), pipe (8) in the fluid cylinder, fluid cylinder outer tube (9), hollow piston (10), stud (11) and anti-rotation flange (12) are formed, pipe (8) in the fluid cylinder is arranged in fluid cylinder outer tube (9), an end of pipe (8) is fixed with end cover (6) in fluid cylinder outer tube (9) and fluid cylinder, the other end of pipe (8) is fixed with flange in fluid cylinder outer tube () 9 and the fluid cylinder, the end of fluid cylinder outer tube (9) is fixed with pipe joint (7), in the annular space in fluid cylinder outer tube (9) and fluid cylinder between the pipe (8) hollow piston (10) is arranged, hollow piston (10) passes flange, the other end of hollow piston (10) is connected on the anti-rotation flange (12), and stud (11) passes the flange hole of the periphery of anti-rotation flange (12);
Lubricator assembly (3) is made up of flange (13), lubricator (14) and emptying gate (15), flange (13) is connected with fluid cylinder assembly (2) by stud (11), one end of lubricator (14) is fixed in flange (13) centre bore, the other end of lubricator (14) has external screw thread, the endoporus of lubricator (14) is identical with cartridge (19) external diameter of leak stopping packer (4), lubricator (14) is welded with pipeline, is connected with emptying gate (15) on the pipeline;
Leak stopping packer (4) mainly is made up of mandrel (16), outer tube (17), connector (18), cartridge (19), slip spider (20), inner central tube (21), slip insert (22) and end cap (23); A mandrel (16) is arranged in outer tube (17), one end of mandrel (16) is in the outside of outer tube (17), and the end of mandrel (16) is square, the other end at outer tube (17) is fixed with cylindrical connector (18), connector (18) has centre bore, in connector (18) centre bore, be fixed with inner central tube (21), be with cartridge (19) and slip spider (20) on the outer arm of inner central tube (21), the external diameter of cartridge (19) and slip spider (20) is identical with connector (18) external diameter, slip insert (22) is arranged on the outer arm of slip spider (20), the other end of mandrel (16) is in inner central tube (21), in the end of slip spider (20) end cap (23) is arranged, trapezoidal motion thread is arranged at the outer wall and slip spider (20) inwall of inner central tube (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201158522U CN201627562U (en) | 2010-02-10 | 2010-02-10 | Switch plugging blowout relief device in wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201158522U CN201627562U (en) | 2010-02-10 | 2010-02-10 | Switch plugging blowout relief device in wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201627562U true CN201627562U (en) | 2010-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201158522U Expired - Lifetime CN201627562U (en) | 2010-02-10 | 2010-02-10 | Switch plugging blowout relief device in wellhead |
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| Country | Link |
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| CN (1) | CN201627562U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850664A (en) * | 2012-11-30 | 2014-06-11 | 中国石油天然气股份有限公司 | Remote hydraulic well opening and closing device for oil-gas well mouth emergency rescue |
| CN104879079A (en) * | 2015-06-05 | 2015-09-02 | 辽宁石油机械制造有限公司 | Sluice-valve under-pressure replacement device and method of oil extraction wellhead |
| CN111594088A (en) * | 2020-06-20 | 2020-08-28 | 中国石油天然气股份有限公司 | Injection well head plugging device |
| CN112282691A (en) * | 2020-10-13 | 2021-01-29 | 中国石油大学胜利学院 | Blowout prevention packer and hydraulic blowout control device thereof |
-
2010
- 2010-02-10 CN CN2010201158522U patent/CN201627562U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850664A (en) * | 2012-11-30 | 2014-06-11 | 中国石油天然气股份有限公司 | Remote hydraulic well opening and closing device for oil-gas well mouth emergency rescue |
| CN104879079A (en) * | 2015-06-05 | 2015-09-02 | 辽宁石油机械制造有限公司 | Sluice-valve under-pressure replacement device and method of oil extraction wellhead |
| CN111594088A (en) * | 2020-06-20 | 2020-08-28 | 中国石油天然气股份有限公司 | Injection well head plugging device |
| CN111594088B (en) * | 2020-06-20 | 2022-03-01 | 中国石油天然气股份有限公司 | Injection well head plugging device |
| CN112282691A (en) * | 2020-10-13 | 2021-01-29 | 中国石油大学胜利学院 | Blowout prevention packer and hydraulic blowout control device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |